A domain name server (DNS) converts domain names into Internet protocol (IP) addresses. Domain name servers can be thought of as the Internet's equivalent of a phone book. As they maintain a directory of domain names and translate them into IP addresses, these mappings allow a computer to locate a website and a user to access a website.
One domain name server example is the domain name www.whitehatsec.com. Through DNS, it is converted to the IP address 126.96.36.199.
Want to know what happens when an Internet server is corrupted? Read about DNS spoofing.